Several years ago (maybe 10 or 15 or so), there used to be German restaurant near Ogontz and Olney in North Philly. It has since closed, but I will never forget this lettuce salad that they had that seems so simple, but was so delicious. I believe it was long strips of iceberg lettuce in a vinegary mix (maybe onions, or at least an onion flavor, too). Does anyone remember this? If so, or if it sounds like a common German dish, does anyone know a recipe or where else to find it?